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May Weather in Pasco, United States

Last updated: June 24, 2025

In May, the average temperature in Pasco, United States hovers around 19°C (66°F), providing a comfortable atmosphere for exploration. Expect temperatures to swing from a chilly 3°C (38°F) at night to a warm 37°C (99°F) during the day. While you'll enjoy relatively low rainfall with an average precipitation amount of 15 mm (0.6 in) over the course of 4 days, the average humidity remains high at 77%, ensuring a pleasantly warm ambience.

May Temperature in Pasco

In May in Pasco, the average temperature is 19°C (66°F). Maximums can reach 37°C (99°F), while minimums can drop to as low as 3°C (38°F). This variation in temperature makes Pasco an ideal destination for travelers seeking both warmth and cooler evenings.

May Weather in Pasco: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Pasco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pasco, May typically has an average temperature of 19°C (66°F), with highs reaching up to 37°C (99°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec353746556674818069544336
Data source: Temperature data for Pasco generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Pasco

In Pasco in May, the precipitation amount is 15 mm (0.6 in) occurring over the course of 4 days.

May Precipitation Trends in Pasco

The chart displays monthly precipitation patterns in Pasco, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Pasco, May typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec3945322615100312273735
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Pasco

In Pasco in May, humidity is 77%. With an average temperature of 19°C (66°F), this humidity feels like a heavy blanket wrapping around you, making the air feel thick and sticky, which can be quite uncomfortable for traveling.

May Average Humidity in Pasco

This chart illustrates the average monthly humidity levels in Pasco, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Pasco is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Pasco

In Pasco in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Pasco.

Maximum UV Index Levels in Pasco for May

The chart shows the monthly maximum UV Index (UVI) for Pasco in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Pasco typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356991097532
Data source: Pasco May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Pasco Compares to Other Months

Weather in Pasco varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Pasco, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Pasco, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)39 mm (1.5 inches)85%low
February Weather3°C (37°F)45 mm (1.8 inches)86%moderate
March Weather8°C (46°F)32 mm (1.3 inches)86%moderate
April Weather13°C (55°F)26 mm (1.0 inches)82%high
May Weather19°C (66°F)15 mm (0.6 inches)77%very high
June Weather23°C (74°F)10 mm (0.4 inches)79%very high
July Weather27°C (82°F)0 mm (0.0 inches)77%very high
August Weather27°C (80°F)3 mm (0.1 inches)62%very high
September Weather20°C (69°F)12 mm (0.5 inches)60%high
October Weather12°C (54°F)27 mm (1.1 inches)80%moderate
November Weather6°C (43°F)37 mm (1.5 inches)87%moderate
December Weather2°C (36°F)35 mm (1.4 inches)86%low

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